[interpreter, debugger] support debug breaks via bytecode array copy

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 4efd5b31edb9ee7832697605903b274980e8c026..f1f8ba4f2ea94ed5c8180a138c26a819e987a097 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7,7 +7,6 @@
 
 #include <iosfwd>
 
-#include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/bailout-reason.h"
 #include "src/base/bits.h"
@@ -4480,6 +4479,8 @@ class BytecodeArray : public FixedArrayBase {
 
   void Disassemble(std::ostream& os);
 
+  void CopyBytecodesTo(BytecodeArray* to);
+
   // Layout description.
   static const int kConstantPoolOffset = FixedArrayBase::kHeaderSize;
   static const int kHandlerTableOffset = kConstantPoolOffset + kPointerSize;
@@ -10650,6 +10651,10 @@ class DebugInfo: public Struct {
   // Get the number of break points for this function.
   int GetBreakPointCount();
 
+  static Smi* uninitialized() { return Smi::FromInt(0); }
+
+  inline BytecodeArray* original_bytecode_array();
+
   DECLARE_CAST(DebugInfo)
 
   // Dispatched behavior.